let reduce2Sum = ( arr ) => {
  let sum = arr.reduce( ( accumulator, currentValue ) => {
    return accumulator += currentValue;
  }, 0 )
  return sum;
}
const m = [ 1, 43, 656, 8, 54, 908, 4, 5, 23, 78, 435, 89, 45, 476, 89 ];
const n = [ 234, 56, 90, 675, 56, 786, 90, 564, 8, 657, 87, 64, 354, 2, 75 ];
const q = [ 34, 76, 76, 564, 34, 32, 16, 67, 25, 98, 90, 345, 235, 64, 134, 76 ];
reduce2Sum( m )
console.log( 'reduce2Sum( m ): ', reduce2Sum( m ) );
reduce2Sum( n )
console.log( 'reduce2Sum( n ): ', reduce2Sum( n ) );
reduce2Sum( q )
console.log( 'reduce2Sum( q ): ', reduce2Sum( q ) );
/*
reduce2Sum( m ): 2914
reduce2Sum( n ): 3798
reduce2Sum( q ): 1966

\ ___________________________________________________
bryan_dir: array - helpers_exitstatus: 0 === =>
*/
